Cotton-gin



(No Model;

G. PORSHAG. V

COTTON GIN. I

Patented May 8, 1883.

WI TNESSHS:

N. PETERS, Phata'Lilhognphlr. Washington. DJ:

UNITED STATES PATENT OFFICE.

w GEORGE FORSHAG, OF AMITE CITY, LOUISIANA.

COTTON-GIN.

SPECIFICATION forming part of Letters Patent No. 277,417, dated May 8,1883.

Application filed October 21, 1881. (No model.)

1 Q specification.

Heretofore in the construction of that class of cotton-gins havingconcave beds or cleaners therein the said cleaners have either beenprovided with wire teeth inclined toward the receiving end of themachine or they have been composed of brushes placed in such manner asto be in line with the shaft of the brushcylinder, or incliningrearward'of the same.- These constructions are objectionable, for the 2Qreason that the former tends to choke the machine or retard the passageof the lint, while in thelatter the bristles, necessarily placed inclose proximity to one another, operate on the surface of the feed, fromthe fact of their 2 lacking sufficient strength and elasticity topenetrate the same. Especially is this the case when running a heavyfeed through the machine.

My invention has for its object the remedying of the difficultiesheretofore experienced in this class of machines; and it consists in aconcave bed composed of bars or sections, having inclined metallicteeth, said sections being secured at suitable distances apart for 5 theexit of the dirt or trash relieved from the cotton, the spaces betweenthe sections being overlapped by the rear teeth of the bar or sectionnext preceding, thus producing a yielding bed throughout the full lengthof the con- 0 cave, with openings for the exit of dirt, &c.,

and insuring a combing rather than a brushin g or beating action, as inother machines.

My invention further consists in the combination vof parts, as will behereinafter more 5 fully described and specifically claimed.

1n the accompanying drawings, Figure 1 is a vertical crosssection of acotton gin provided with my improvement. Fig. 2 is a perspective view ofone of the sections of my concave cleaner. 1

The letter A designates one end of an ordinary gin-frame. bis thesaw-shaft, and c the saws thereof.

. d is the revolving brush-cylinder, fitted on a shaft, e, in the usualmanner.

My improved cleaner is composed of sections D, each having a concaveinner surface, provided with inclined metallic teeth f, as shown in Fig.2. These sections are furthermore provided with metal end plates, g, hav

ing holes therein for the passage of bolts or screws, whereby they aresecured to the ends of the gin, with the teeth of the concavesufficiently near the brush cylinder to insure a separation and perfectcleaning of the fibers without injury to the same. A spacev is leftbetween each section for the discharge of dirt, &c., released from thecotton, and these spaces are overlapped by the rear teeth of the sectionnext preceding, so as to prevent the cotton from coming in contact withthe edges of the sections, whereby a beating process is avoided and alldanger of breaking or tearing the fibers obviated. By this means it willbe seen that the teeth of the concave havea combing action on thematerial, whereby the tufts of cotton, as they are drawn from thesaw-teeth, are gradually opened out and the fibers straightened in theirpassage through each successive row of teeth of said concave.

Having .described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a cotton-gin, a concave bed composed of sections having inclinedmetallic teeth, said sections being secured at suitable distances apart,andhaving the rear teeth of each section overlapping the space betweenthe said section and the one next in rear thereof, substantially as andfor the purpose set forth.

2. I11 combination with the brush-cylinder of a cottongin, a concave bedcomposed of sections having inclined metallic teeth, said sections beingsecured at suitable distances apart, and having the spaces between eachoverlapped by the rear teeth of the section next preceding,substantially as described, and

for the purpose specified.

GEORGE FORSHAG.

Witnesses:

G. T. RAOUL, SAML. FLOWER.

